. >> president obama is bringing out star power for some of his final campaign events. >> this one goes out to other people who know that their vote can make a difference. >> pop singer katie. hope to rally supporters in wisconsin. the president get four swing states saturday telling voters he kept the promises he made four years ago. >> when i said i ended the war in iraq, i ended it. when i said i ended to ask, don't tell, i ended it. >> voters say the economy is the number one issue on tuesday and president obama says his policies are working. >> our business has created nearly five and a half million new jobs. >> her republican challenger that romney disagrees. >> will have another debt ceiling, and there will be a question of whether there will be a shutdown of government. can you imagine four more years of that going on? >> every vote counts. recent polls show the race is in a dead heat with single digits. the republican nominee is challenging remarks friday, that voting is the best revenge and he's hitting the quotes on the campaign trail. >> let me tell you, go for the love of c